I would recommend not using OEM HP products for a custom All-in-One system. What physically fits and is electrically compatible could present major problems.
Motherboards for All-in-One PC's are thin mini-ITX form factor. Note the special connectors used for display panels on these motherboards.
A large marketing effort was put into making All-in-One PC products back in 2013. It didn't seem to be very successful as there is not a lot of products for sale in the Do It...
I would recommend not using OEM HP products for a custom All-in-One system. What physically fits and is electrically compatible could present major problems.
Motherboards for All-in-One PC's are thin mini-ITX form factor. Note the special connectors used for display panels on these motherboards.